Sorry, I don't even know what to search under, so if this is covered in another thread, forgive me.

Lately, at least once a day, I either answer a call or dial a call, and all I get is a loop from the mic to the earpiece, so that I am talking to myself. The call does not connect, and I cannot hear the person on the other end. What is going on here? Thanks.

If I had to guess right off that start I would be putting a fresh copy of the handheld OS on the device. From you carriers website you should be able to download the newest version. It sounds like maybe the call is being dropped when you press send or something of the like but the phone still thinks the call is active.

I would really try doing the OS reinstall. Should take 20-30 minutes and really is a next-next-next type of install.